Anyone can update me about the game, thanks

Hi everyone, I just restarted playing Sc2 for the first time since id say about 2 years, and oh boy do I feel confuse right now. The game economy changed, I have no idea what are the standard build orders. I was master rank before so Im not a noob but id really appreciate if someone could share some infos with me, that would make the learning process less harsh for me.

1. What is the most standard and safe opening build order at the moment (for the macro game).2. What kind of early harassment or rush options do I have that is considered effective?3. Is it still a good idea to build pylons around the map to either warp in units for harassment/reinforcing army when pushing or its just better to use a warp prism for this.4. Do I absolutly need to use disrupter to stay competitive at a higher level or there are viable alternative?5. When should I build disrupters and agains what kind of army composition they are usually effective?6. Adept vs Zealots? When to use them and why.7. What is a good late game death ball units composition at the moment?8. I see terran liberator are very powerful, is tempest my only option to counter them?

Alright that’s enough questions for now I guess! Thanks to you guys if you can update me with the current state of Starcraft 2. Oh and sorry for my bad english!

3. Is it still a good idea to build pylons around the map to either warp in units for harassment/reinforcing army when pushing or its just better to use a warp prism for this.

Depends.If you're doing an all-in, it's often better to use a pylon + gateway, both so you don't waste robo time and because it's a whole lot more durable.Otherwise, Warp Prisms are pretty much always better.